/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/CollectionPropertyFacade.h
Append all properties and values from an existing collection to this property collection. This won't copy any other groups, only data from PropertyGroup. Modified properties will be marked dirty.
void Append ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< const [FManagedArrayCollection](API\Runtime\Chaos\GeometryCollection\FManagedArrayCollection) > & InManagedArrayCollection, bool bUpdateExistingProperties )